Flux for welding copper.



v UNITED STATES PIIT NT OFFICE.

TURNER W. WILSON, OF WASHINGTON, DISTRICT or COLUMBIA, AssIGNoR TOWILLIAM E. wILso or WASHINGTON, DISTRICT or COLUMBIA.

FLUX FOR WELDING COPPER.

Specification of Letters Patent.

' Patented March 19, 1907.

Application filed Japuary 17,1907. Serial No. 362,786.

To all whom) it may concern:

Be it known that I, TURNER W. WILsoN, a

. citizen of the United States, residing at Washington, in the Districtof Columbia, have invented certain new and useful Improvements in Fluxfor \Velding Copper, of which the following is a specification.

This flux consists, essentially, of ap roximately equal parts of. aborate, specifically sodium blborate or borax, and a nitrate,specifically potassium nitrate or saltpeter. The components arepreferably finely divided and intimately mixed.

. welded in the ordinary manner by hammering or compression.- A strongand thoroughly satisfactory weld may thus be effected.

Iclaim I 1. A flux for welding copper, consisting essentially ofapproximately equal parts of a borate and anitrate.

2. A flux for welding copper, consisting es-.

sentially of approximately equal arts of an alkali-metal borate and analkali-metal nitrate. 1

3. A flux for welding copper, consisting essentially of approximatelyequal parts of sodium biborate and potassium nitrate.

I In testimony whereof I affix my signature in presence of twowitnesses.

, TURNER W. WILsoN.

Witnesses: I

WILLIAM E. WILSON, WALTER E. HILTON.

